That's because there are nearly 30,000 Subway restaurants in the US — more than any other retail chain in America — and 14,155 McDonald's restaurants in the country.

Yum! Brands — the owner of Taco Bell, KFC, and Pizza Hut — also has a strong showing with more than 17,500 restaurants in the US.

The growth of these chains and others is part of what has helped the US become the most over-retailed country in the world.

The US has 23.5 square feet of retail space per person, compared with 16.4 square feet in Canada and 11.1 square feet in Australia, the next two countries with the most retail space per capita, according to Morningstar Credit Ratings.

Here's a list of the most ubiquitous chains in America, starting with Subway, according to the National Retail Federation and Statista.